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问答题
WhataredisadvantagesofNetworkAddressTranslationTransparency?（）
A.Thereisnodisadvantage.
B.Itwilladd16bytesperpacketofoverhead(8bytesUDPheader,and8bytesofNON-IKEMarker).
C.Itwilladd36bytesperpacketofoverhead(20bytesofIPheader,8bytesofUDPheader,8bytesofNON-IKEMarker).
D.ItwillrequirethatbothcryptopeerssupportthisfeatureintheIOSversion.Bothcryptopeersmustalsohavethisfeatureenabled.
B.Itwilladd16bytesperpacketofoverhead(8bytesUDPheader,and8bytesofNON-IKEMarker).
C.Itwilladd36bytesperpacketofoverhead(20bytesofIPheader,8bytesofUDPheader,8bytesofNON-IKEMarker).
D.ItwillrequirethatbothcryptopeerssupportthisfeatureintheIOSversion.Bothcryptopeersmustalsohavethisfeatureenabled.
